How to learn physics well? (summing up experience)
Compared with junior high school physics, senior high school physics has more contents, greater difficulty, higher ability requirements and greater flexibility. So many students are very uncomfortable after entering high school. After entering the first year of high school, there is no problem with the movement of forces and objects for the time being. I think high school physics is like this. After learning Newton's laws of motion, the problems began. The problems of curvilinear motion, law of universal gravitation, momentum and mechanical energy became more and more serious. If we don't change our learning attitude and methods in time, physics will get worse and worse. When it comes to physics, we will have a headache, hate physics more and more, and gradually become insulated from it. This makes it difficult for some students who learn physics well in junior high school to adapt quickly after high school. The following are some views and suggestions on how to learn physics well in senior high school. First, we should change our ideas. Physics in junior high school is good, but physics in senior high school is not necessarily good. Junior high school physics knowledge is relatively simple, with little content and easy to master. In addition, in the late third grade, through a lot of practice and repeated intensive training, proficiency has been improved, which can greatly improve physical performance. But high marks do not mean that you can learn physics well and learn physics. If you don't cultivate your interest in learning physics and don't have good learning methods, it is difficult to learn physics well in high school. Therefore, we must first change our concepts. If we learn physics well in junior high school, we may not learn well in senior high school. So lower the starting point and start from scratch. Second, we should cultivate a strong interest in learning physics. Interest is one of the driving forces of thinking, a powerful and lasting driving force for learning, and a potential driving force for learning physics well. There are many ways to cultivate interest. From the students' point of view, it should be noted that physics is closely related to daily life, production and modern science and technology. There are many physical phenomena around us and we use a lot of physical knowledge. For example, when speaking, the vibration of vocal cords forms sound waves in the air, and the sound waves reach the ears, causing the eardrum to vibrate and produce hearing; Atmospheric pressure is helpful when drinking boiled water, drinks and dipping a pen in ink. When walking, the static friction between the foot and the ground is helpful, and the walking process consists of continuous dumping action; Remove impurities from rice when washing rice and use buoyancy knowledge; A straight chopstick is inserted obliquely into the water, and it seems that the chopsticks are curved on the water surface; The formation of lightning and so on. Consciously connecting with physical knowledge in practice and applying physical knowledge to practice let us know that physics is so closely related to us that it is useful. Can greatly stimulate the interest in learning physics. From the teacher's point of view, we should introduce the concepts and laws of physics through vivid practical examples and intuitive experiments that students are familiar with, organize students to carry out experimental operations, and let students feel the close connection between physics and daily life; Combined with the content of the textbook, introduce the history and progress of physics and its wide application in modernization to students, let students see the use of physics, and make it clear that today's study is for tomorrow's application; According to the content of the textbook, students are often selectively introduced to some vivid physical allusions, anecdotes and mysterious stories of Chinese and foreign physicists exploring the physical world; According to the teaching needs and students' intellectual development level, some interesting and thoughtful questions are put forward. Teachers' efforts from these aspects can also make students have a passive interest in physics and stimulate their enthusiasm for learning physics. Third, in the classroom, improving listening efficiency is the key. During study, time in the classroom is very important. So the efficiency of class determines the basic situation of learning. We should pay attention to the following aspects to improve the efficiency of class attendance: 1, and preview before class can improve the pertinence of class attendance. The difficulty found in the preview is the focus of the lecture; We can make up for the old knowledge that we have not mastered well, learn new knowledge, reduce blindness and passivity in the process of listening to lectures, and help improve classroom efficiency. After preview, comparing and analyzing the knowledge you understand with the teacher's explanation can improve your thinking level, and preview can also cultivate your self-learning ability. 2, in the process of listening to lectures, we should concentrate, concentrate, and not be absent-minded. Concentration is to devote yourself to classroom learning, so that you can hear, see, feel, speak and touch. If you can achieve these "five goals", your energy will be highly concentrated, and all the important contents learned in class will leave a deep impression on your mind. Make sure you can concentrate on the class and don't be distracted. Be sure to pay attention to the ten-minute break before class, and don't do too intense exercise or debate, or read novels or do homework, so as not to be breathless, daydreaming, unable to calm down, or even start to sleep. Therefore, we should make material preparation and mental preparation before class. Pay special attention to the beginning and end of the teacher's lecture. At the beginning of a teacher's lecture, it is generally to summarize the main points of the last lesson and point out the content to be talked about in this lesson, which is a link to link old knowledge with new knowledge. Finally, he often summarizes the knowledge in a class, which is very general and is an outline for mastering the knowledge and methods in this section on the basis of understanding. 4. Take notes. Taking notes is not a record, but a concise record of the key points and difficulties in the above lectures, and recording the main points of the lectures and your own feelings or innovative ideas. In order to review digestion. 5. We should carefully examine the questions, understand the physical situation and process, pay attention to the ideas of analyzing problems and the methods of solving problems, and stick to it, we will certainly be able to draw inferences from others and improve the ability of knowledge transfer and problem solving. Fourth, do a good job in reviewing and summarizing. 1, review in time. On the second day after class, you must do a good job of reviewing that day. An effective way to review is not only to read books and notes over and over again, but also to take retrospective review: first, combine books and notes to recall what the teacher said in class, such as the ideas and methods of analyzing problems (you can also write them in a draft book while thinking), and think as completely as possible. Then open the book and notebook, compare and make up what you don't remember clearly, so as to consolidate the content of the class that day, check the effect of the class that day, and put forward necessary improvement measures for improving listening methods and improving listening effect. 2. Review these chapters. After learning a chapter, you should review it in stages, and the review method is the same as timely review. We should review by recalling, and then compare books and notes to make its content perfect, and then do a good job in the general part of the chapter. 3. Make a chapter summary. The chapter summary should include the following parts. Knowledge network in this chapter. Main contents, theorems, laws, formulas, basic ideas and methods of solving problems, conventional typical problems, physical models, etc. Self-experience: In this chapter, you should record the typical problems you did wrong, analyze their causes and correct answers, and record the most valuable ideas or examples in this chapter, as well as the unsolved problems, so as to make up for them in the future. 4. Do a comprehensive review. In order to prevent the previous knowledge from being forgotten, every once in a while, it is best not to exceed ten days, and review all the previous knowledge, which can be done by reading books, taking notes, doing problems, reflecting, etc. Fifth, correctly handle the exercises. Many students pin their hopes of improving their physics scores on a large number of problems and engage in sea tactics. This is inappropriate. "Don't judge heroes by how many questions they do." The important thing is not to do more questions, but to achieve high efficiency and goals. The purpose of doing the problem is to check whether the learned knowledge and methods are well mastered. If you don't master it correctly, or even have deviations, the result of doing so many questions is to consolidate your shortcomings. Therefore, we should do a certain amount of exercises on the basis of accurately mastering the basic knowledge and methods. As for the intermediate questions, we should pay attention to the benefits of doing the questions, that is, how much we have gained after doing the questions. This requires some "reflection" after doing the problem, thinking about the basic knowledge used in the problem, the main knowledge points, the physical laws used, whether there are other solutions, and whether the analytical methods and solutions of the problem have been used in other problem solving. If you connect them, you will get more experience and lessons. Of course, it is impossible to form skills without a certain amount of practice (homework assigned by the teacher), and it is also impossible. In addition, whether it is homework or exams, we should put accuracy first and methods first, instead of blindly pursuing speed, which is also an important aspect of learning physics well. 6. Pay attention to observation and experiment. Physical knowledge comes from practice, especially from observation and experiment. We should carefully observe physical phenomena and analyze the conditions and causes of physical phenomena. It is necessary for physics students to do experiments well, learn to use instruments and process data, and understand the basic methods of studying problems with experiments. We should consciously improve our observation ability and experimental ability through observation and experiment. In short, as long as we are open-minded, eager to learn, proactive, practical and serious, work hard on the understanding of knowledge, think more, study more, stress scientific learning methods, connect with the reality of life and production, and pay attention to the application of knowledge, we will certainly learn high school physics well.